Is high pressure sodium the same as metal halide?
What is the Difference Between Metal Halide and High Pressure Sodium? Both Metal Halide and High Pressure Sodium bulbs are part of the HID family of bulbs. The primary visual difference between them is that metal halide light is white and the light emitted from a High Pressure Sodium bulb is amber orange.
Is mercury vapor the same as metal halide?
Mercury Vapor (MV) lamps are most frequently used outside for parking and security lighting. Metal Halide (MH) lamps provide the best color rendering of all HID lamps; color rendition is almost as full spectrum incandescents.
What is the difference between sodium and mercury Vapour lamps?
Answer: The light in Sodium Vapour lamp is from an atomic emission process whereas in Mercury Vapour Lamp it is, finally, from fluorescence emission. The mechanism of light emission in a sodium vapour lamp is simple and straight-forward.
What color light is high pressure sodium?
High-pressure sodium (HPS) lamps are part of the family of high intensity light bulbs that put out large amounts of light generally needed for street lighting and security lighting. The combination of metals and gasses within inside the glass tube produces an orange-white light commonly found in street lights.
Do high pressure sodium lamps have mercury?
All commonly available fluorescent tubes and high-intensity discharge (HID) lamps contain mercury. The most common HID lamps are mercury vapor, metal halide, and high-pressure sodium lamps. Older fluorescent lamps may contain nearly 50 milligrams of mercury per 4-foot-long fluorescent lamp.
What color is a mercury vapor light?
Sodium vapor and mercury vapor lamps emit yellow and bright blue light, respectively. They are very efficient, and provide high-intensity light suitable for illuminating large, open areas.
Which is better high pressure sodium or metal halide lights?
Benefits of High Pressure Sodium. A main benefit to HPS lights is the lifespan of about 24,000 hours and fairly cheap to replace compared to the metal halide bulbs. When using HPS lights consumers do not run the risk of coming into contact with mercury, infrared, or UV lights that can cause harm to animals and people.
How much mercury is in a metal halide lamp?
Mercury is a dangerous substance found in all high intensity discharge light bulbs. Mercury should be kept out of landfills both because it is dangerous and because it is easily recyclable. A standard 250 watt metal halide lamp contains around 38 mg of mercury, a 250 watt high pressure sodium lamp contains around 15 mg.
What’s the difference between HPS and metal halides?
Like Metal Halides, High Pressure Sodium lights are omnidirectional, which wastes light and makes them less efficient. They lose roughly 15% of their heat emissions which adds to their inefficiency. HPS light costs differ based on the particular fixtures, but are cheap compared to LEDs.
How does metal halide light affect your health?
Metal halide lamps produce more of a glare compared to high pressure sodium lamps. Certain types of light produced by HID bulbs can affect your health. Blue light is said to affect hormone levels and slow melatonin production. Exposure to metal halide can contribute to muscular degeneration.